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Fig. 17 | Earth, Planets and Space

Fig. 17

From: Chronology of the 2015 eruption of Hakone volcano, Japan: geological background, mechanism of volcanic unrest and disaster mitigation measures during the crisis

Fig. 17

Sequential change of 15-1 crater. a Soon after the eruption, a mud pool formed in the bottom of the crater and vigorous fountaining of mud (arrow) was observed. b A sudden and transient explosion at 15-1 crater on 12:01 of July 21, 2015. c Boiling mud pool formed within 15-1 crater. d Fumaroles formed after a landslide that took place in August 2016

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